UVC Up-conversion and Luminescent Properties of KCaY(PO4)2:Pr3+ Phosphor

This work was supported by the National Science Centre, Poland, under grant number DEC-2021/41/B/ST5/03792 entitled: Phosphors for UVC LEDs: Self-Disinfecting Surfaces We acknowledge DESY (Hamburg, Germany), P66 Beamline, proposal I-20240194 EC. This result has been co-funded by the project NEPHEWS under Grant Agreement No 101131414 from the EU Framework Programme for Research and Innovation Horizon Europe.